how to make the user identity show in IIS7 instead of the physical path credential ?

Hi,

I had a website on IIS6

1. application pool identity was configured to run under domain account.

2. the website directory security identity the integrated windows authentication was checked.

3. the impersonate identity = true in the web config

so the user who access the website will have his login name appear when he access resources.

I moved the website to IIS 7 I used the same domain account as the physical path credentials but the user login is not appearing instead the domain account I used for the physical path.

how to fulfill the same in IIS7 ?